JP2001165137A - Method of fitting beam-jointing bolt in rectangular steel column - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of fitting a beam-jointing bolt in a rectangular steel column, allowing the bolt to be fitted into an optional position of the rectangular steel column of closed cross section, directly to its internal wall and also to be easily fitted into a hole of a joint fitting. SOLUTION: In this method of fitting the beam-jointing bolt, fitting holes 11 for beam jointing bolts 2 are bored in the optional positions of the long-sized rectangular steel column 1 used in a conventional bolt construction method, and one or two bolt insert holes 12 are bored near the fitting holes 11 in the rectangular steel column 1. The tip of the bolt 2 is supported by a support part 31 of a bolt chuck 3, and the bolt 2 is inserted through the insert hole 12 and guided to the fitting hole 11 in an opposed face or a side face. The tip of the bolt 2 is pulled out of the fitting hole 11 and projected to fit the bolt 2 directly to the internal wall of the rectangular steel column 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a bolt for connecting a beam such as an H-beam to a long rectangular steel pipe column having a length of up to about 5 stories, which is guided from the outside of the rectangular steel pipe column to its inner wall. The present invention relates to a method of mounting beam connecting bolts on a square steel pipe column that can be arranged.

[0002]

2. Description of the Related Art Conventionally, welding of a square steel pipe column to a beam such as an H-section steel beam is hardly performed because the inside of the square steel pipe column is inaccessible, but the welding method is troublesome. Not only that, the quality and strength of the welded portion of the beam varied due to the skill of the welding operator. In addition, in the welding method, the square steel pipe column is cut once, the beam is joined, and then the square steel pipe column is welded.Therefore, there is a problem in securing the quality of the square steel pipe column and assembly accuracy is required. I couldn't do the job until the decision was made. For this reason, as shown in FIG. 5, there are many joint structures using a bolt construction method for joining a square steel pipe column (1) and a beam (9) such as an H-section steel, etc. Reach the inside from the end of the square steel pipe column (1), place the bolt (2), fix the joint hardware (6), and attach the beam (9) such as H-section steel to the bolt (2). The method is a bolt method in which the rectangular steel pipe column (1) is attached to the rectangular steel pipe column (1). On the other hand, the rectangular steel pipe column (1), which has been cut once, is joined again by welding. It was not possible to attach a beam (9) such as an H-section steel at an intermediate position of.

[0003] In recent years, a special reinforcing metal for beam joining has been used to easily bolt a beam (9) such as an H-beam at an arbitrary position of a long rectangular steel tubular column (1). Various construction methods have been proposed for mounting the inside of a long rectangular steel tube column (1). The present inventor also has utility model registration number 301.
No. 8179 proposes a "mounting member for connecting a rectangular steel tubular column and a beam for building" (see FIG. 4). Furthermore, a beam (9) of H-section steel or the like can be provided at any position of the long rectangular steel tube column (1)
Has been proposed in Japanese Utility Model Registration No. 3018180 for easily performing the bolting method from the outside.

[0004]

However, in the case of using a method of attaching the reinforcing metal for beam joining to the inside of a long rectangular steel tubular column (1) or using a joining attachment member of Utility Model Registration No. 3018179, When attaching them to the inside of a long rectangular steel pipe column (1), it is difficult to pass the bolts (2) by aligning the holes exactly, and the mounting position of the joint mounting member is set accurately. This is troublesome and troublesome. In particular, there is a problem that the rectangular steel tube column (1) cannot be used if the plate thickness is different and the inner diameter is different. Furthermore, when using the mounting bolts for joining that enables the bolting method to be easily performed from the outside of the square steel tubular column (1) proposed by the present inventors,
The disadvantage is that the unit cost is high because the structure is complicated.

SUMMARY OF THE INVENTION The present invention relates to a beam joint in a square steel tube column which can be directly attached to an arbitrary position of a square steel tube column having a closed cross section and the inner wall thereof, and which can be easily installed in a hole of a joint fitting. It is an object of the present invention to provide a method for mounting a bolt for use.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. That is, the present invention is applied to a conventional bolt construction method in which a mounting hole for a beam connecting bolt is formed at an arbitrary position. In a long rectangular steel pipe column, an insertion hole for bolt insertion is drilled near the mounting hole, a supporting portion for supporting the tip of the bolt, a wire for guiding between the insertion hole and the mounting hole, and the like. Using a bolt chuck composed of an introduction part, the bolt chuck supports the tip of the bolt, inserts it through the insertion hole, guides the bolt toward the mounting hole on the facing surface or the lateral surface, and bolts from each mounting hole. Pull out and protrude the screw part, place a reinforcing steel plate and joining hardware in accordance with the screw part, attach a washer and a nut to the screw part, fix it, and directly attach a bolt to the inner wall of the square steel pipe column Square pillars It takes the method of mounting Beam Connection bolt. When the screw portion of the bolt is pulled out and protruded, a temporary fixing tool is attached to the base of the screw portion, and the bolt is protruded from all the mounting holes and temporarily fixed with the temporary fixing device. A method of attaching beam joining bolts may be used in which the joining hardware is arranged, a washer and a nut are attached to each screw portion, all the temporary fixing tools are removed, and the nut is further tightened and temporarily fastened.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a view showing a method of an embodiment of the method of the present invention. First, the numbers in the drawing will be described. (1) is a long rectangular steel pipe column having a length of up to about 5 stories, and a mounting hole (11) for a beam connecting bolt (2) is formed in an arbitrary position of the rectangular steel pipe column (1). And an insertion hole (12) for bolt insertion. The mounting hole (11) is 2 mm larger than the outer diameter of the screw (21) of the bolt (2).
The insertion hole (12) is about 2.5 to 3 times the diameter of the screw, so that the head of the bolt (2) can be easily inserted and inserted. Just set it.
The insertion hole (12) is formed on the surface facing the mounting hole (11). However, depending on the mounting state of the beam (9), the insertion hole (12) may not necessarily be formed on the surface facing the mounting hole (11). The insertion hole (12) formed in the lateral surface is used. As the bolt (2), a torcia-type high-strength bolt shown in FIGS. 1 and 3A may be used, but a general hexagonal bolt shown in FIG. 3B may be used. (3) is a chuck-shaped support portion (31) composed of a number of claws and one ring for supporting the tip of the bolt (2), and the support portion (31) is attached to one end and the other end is made elliptical. FIG. 1 (b), FIG. 3 (b), a bolt chuck comprising a bent piano wire or the like introduction part (32).
(A)], and this bolt chuck (3) has an insertion hole (12).
And the mounting hole (11) are guided by the introduction portion (32), and the screw portion (21) of the bolt (2) is pulled out from the mounting hole (11) so as to protrude. This is a work tool for placing the head of 2). FIG. 3 (b)
The end of one slightly thicker piano wire or the like is formed in a spiral shape, and a screw portion (21) is screwed into the end and a bolt chuck (3) bent in a circular shape at the other end. You may. Reference numeral (4) denotes a removable temporary fixing tool. The temporary fixing tool (4) has a temporary fixing portion formed by bending a steel wire or the like shown in FIG. (41) and a cord (42) attached to the temporary fixing part (41). (5) is a reinforcing steel plate provided with a hole (51) for mounting a bolt (2),
It is mounted between the rectangular steel pipe column (1) and a metal fitting (6) to be described later, but it may not be used depending on the bonding state.
Reference numeral (6) denotes a metal joint having a hole (61) for mounting the bolt (2). As the metal joint (6), a split T-shaped steel is used, but another material may be used. (7)
Is a washer, and (8) is a nut screwed into the bolt (2).

Next, the mounting method of the present invention will be described.
A square steel pipe column (1) in which a mounting hole (11) is drilled in advance, a required number of insertion holes (12) are drilled, and burrs inside the mounting hole (11) and the insertion hole (12) are removed. Prepare it [see FIG. 1 (a)]. Further, a bolt (2) and a bolt chuck (3) for supporting the bolt (2) are prepared [see FIG. 1 (b)]. First, when the tip of the bolt (2) is inserted into a large number of claws and the ring is pushed toward the claws, the bolt (2) is gripped by the support portion (31), and there is no fear of falling off [FIG.
(C)]. When the tip of the bolt (2) is supported, a method of gripping the tip of the torcia-type high-strength bolt (2) using a bolt chuck (3) shown in FIG. Using the bolt chuck (3) shown in FIG. 3 (b), the bolt (2) is supported by being screwed with the thread portion (21) of a torcia-type high-strength bolt (2) or a general hexagonal bolt (2). There is a way to make it. Next, insert the bolt (2) into the insertion hole (12).
From the mounting hole (11) to project the screw portion (21) from the mounting hole (11). First, the introduction portion (32) of the bolt chuck (3) supporting the bolt (2) is inserted into the insertion hole (12). Then, aiming at the specified mounting hole (11),
Insert the tip of 2). As shown in FIG. 2, the bolt (2) is inserted through the insertion hole (12) from the left side and the square steel pipe column is inserted by pulling the introduction portion (32) projecting to the outside of the square steel pipe column (1) by hand. Enter inside (1). Further, the tip of the screw portion (21) of the bolt (2) is inserted into the mounting hole (11) and protrudes rightward (see FIG. 1D). At this time, the bolt (2) is inserted from the insertion hole (12), and can be easily arranged with the bolt chuck (3) in the mounting hole (11) provided on the facing surface or the lateral surface. Also, as shown by an arrow in FIG. 1A, a screw (21) of a bolt (2) is inserted into an arbitrary mounting hole (11).
Is projected outside the rectangular steel tube column (1). Next, when the screw portion (21) protrudes, the bolt (2) is temporarily fixed by fitting a temporary fixing portion (41) formed by bending a steel wire or the like into a substantially C shape into the base thereof. Thereafter, when the wheel is pulled back from the claw side, the holding portion (31) is released from the gripping state of the bolt (2), and the bolt chuck (3) is removed. In this way, the bolt (2) is sequentially inserted through the insertion hole (12), and the screw portion (21) is pulled out from the mounting hole (11) so as to protrude. (See FIG. 2). The base of the screw part (21) protruding from the mounting hole (11) of the square steel tubular column (1) is temporarily fixed by a temporary fixing tool (4) and a string part from the screw part (21) of each bolt (2). (42)
Is suspended [see FIG. 1 (d)].

After the bolts (2) have been placed in all the mounting holes (11), the reinforced steel plate (5) with holes, the metal joint (6) with holes, the washer (7), and the nut (8) are formed. ) Is prepared. First, align the hole (51) of the reinforcing steel plate (5) with the screw part (21) protruding from each mounting hole (11), and arrange the reinforcing steel plate (5) on the surface of the square steel tubular column (1). Let it. Next, the hole (61) of the metal joint (6) is fitted to the surface of the reinforcing steel plate (5) by fitting the hole (61) to the screw portion (21). Then, a washer (7) and a nut (8) are inserted into the protruding screw portion (21) to temporarily fix the nut (8). At this time, depending on the joining state, the joining hardware (6) may be directly attached without interposing the reinforcing steel plate (5). After the temporary fixing, the string part (42) is pulled to remove the temporary fixing tool (4) from the bolt (2). The nut (8) is tightened and temporarily tightened as much as it is removed and loose (see FIG. 1 (e)). Next, H beam (9)
In order to join the joints, the nut (8) is loosened so that the H-shaped steel beam (9) enters between the joint hardware (6) attached vertically.
At this time, if the H-shaped steel beam (9) enters in the temporarily tightened state, the nut (8) may be left as it is without loosening. And H-beam
When (9) is settled in the predetermined position, the nut (8) may be tightened and fully tightened (see FIG. 1 (f)). When mounting the bolts (2) in the mounting holes (11), first, only a few bolts (2) are mounted, and then the holes (51) of the reinforcing steel plate (5) and the holes of the joint hardware (6). Insert the screw (21) into the (61) with the bolt chuck (3) attached, and also wash the washer (7) and nut (8) with the bolt chuck (3).
Through. After attaching the washer (7) and the nut (8) to the screw portion (21), each hole is confirmed, and the nut (8) is tightened and temporarily fixed. Thereafter, the bolt chuck (3) is removed. When installing the next bolt (2)
It is also possible to insert the screw portion (21) into the mounting hole (11), the hole (51), and the hole (61) at a stretch and mount the bolt (2) sequentially (see FIG. 2). At this time, if the screw (21) can be pressed by hand when attaching the washer (7) and the nut (8), the washer (7) and the nut (8) are removed after the bolt chuck (3) is removed. May be attached.

[0010]

The present invention having the above-described structure has the following effects.

According to a first aspect of the present invention, a long rectangular steel tube column (1) used in the conventional bolt method has a mounting hole (11) for a beam joining bolt (2) at an arbitrary position. One or two bolt insertion holes (12) for bolt insertion are provided near the mounting hole (11) to support the tip of the bolt (2).
(31) and a bolt chuck (3) comprising an insertion hole (32) for guiding between the insertion hole (12) and the mounting hole (11), and the tip of the bolt (2) is attached to the bolt chuck (3). To support,
It is inserted through the insertion hole (12), the tip of the bolt (2) is pulled out from the mounting hole (11) on the facing surface or the lateral surface and protruded, and the reinforcing steel plate (5) is fitted to the screw portion (21). And joining hardware (6)
And a washer (7) and a nut (8) are attached and fixed to the screw portion (21), and the bolt (2) is directly attached to the inner wall of the square steel tubular column (1). Accordingly, the bolt (2) can be attached to the rectangular steel pipe column (1) having a closed cross section by projecting the bolt (2) from the inside to the outside even in the mounting hole (11) at an arbitrary position. It can be easily attached to the hole (61). Also, if the method of the present invention is used,
Even in a part-timer who does not have welding or assembly skills in an assembly factory such as a rectangular steel column (1), the contents of the assembly work are simple. Plate (5) and metal fitting (6) are bolted (2) and nut
(8) It can be easily attached and fixed. Therefore,
Since the bolt method can be easily performed, it is possible to process the parts that are determined from the rough decision point even if the dimensions are not exactly determined as before, and the parts where the design is not determined are processed later. Can be easily performed, and the number of assembling steps is reduced as compared with the conventional processing and mounting method, so that effects such as shortening of a construction period and cost reduction are enhanced.
In addition, even if the plate thickness of the long rectangular steel tube column (1) changes, the method of the present invention can be used to easily and without any trouble, and the bolt (2) can be easily connected to the long rectangular steel tube column (1). It can be mounted inside 1), has no holes, and has good workability.

A detachable temporary fixing tool (4) is attached to the base of the bolt (2) whose tip is pulled out from the mounting hole (11), and the bolt (2) is attached to all the mounting holes (11). Since 2) can be attached in advance, the reinforcing steel plate (5) and the joint hardware (6) can be attached efficiently, and the cost can be reduced. Further, even before the reinforcing steel plate (5) and the joint hardware (6) are attached, the bolt (2) comes off because the temporary fixing tool (4) is attached to the base of the screw portion (21). It is possible to move without having to worry about falling into the inside of the rectangular steel pipe column (1).

According to a third aspect of the present invention, a torcia-type high-strength bolt is used as the bolt (2), and its tip is gripped.
By pulling out from the insertion hole (12) into each mounting hole (11) and making it protrude, fastening work can be performed with the specified tightening torque secured, and it is not necessary to check for looseness of the nut (8) and the square steel pipe The quality of the joining strength between the column (1) and the beam (9) is stabilized, and it is possible to contribute to the cost reduction of the joining work.

According to a fourth aspect of the present invention, the bolt (2) is screwed and supported with the screw portion (21), and is pulled out from the insertion hole (12) into each of the mounting holes (11) so as to protrude. (11)
When the bolt (2) is guided to the square, there is almost no fear that the screw portion (21) of the bolt (2) will fall out and fall into the inside of the rectangular steel tube column (1), and the screw portion (21) will be reliably pulled out and projected. It becomes possible.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing the steps of the method of the present invention.

FIG. 2 is an explanatory view showing a main part of an embodiment of the method of the present invention.

FIG. 3 is an explanatory diagram showing a state in which a tip end of a bolt is supported by a bolt chuck.

FIG. 4 is an explanatory view showing a main part of a joining structure according to a conventional method.

FIG. 5 is an explanatory view showing a main part of another joining structure according to a conventional method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rectangular steel pipe column 11 Mounting hole 12 Insertion hole 2 Bolt 21 Screw part 3 Bolt chuck 31 Support part 32 Introducing part 4 Temporary fixing tool 5 Reinforcement steel plate 51 Hole 6 Joint metal 61 Hole 7 Washer 8 Nut

Claims (4)

[Claims] 1. An installation hole (11) for a beam connecting bolt (2) and an insertion hole (12) for inserting a bolt are formed at an arbitrary position of a long rectangular steel tubular column (1). The bolt (2) is guided from the insertion hole (12) toward the mounting hole (11) drilled on the facing surface or the lateral surface, and the screw of the bolt (2) is inserted from each mounting hole (11). Part (21) is projected and its screw part (2
The hole (51) of the reinforcing steel plate (5) and the hole (61) of the metal joint (6) are aligned with 1), and the reinforcing steel plate (5) and the metal joint (6) are arranged and the washer (7) is arranged. ) And the nut (8) in the fixing step, a supporting portion (31) for supporting the tip of the bolt (2), and a space between the insertion hole (12) and the mounting hole (11). Introductory parts (3
2), the entirety of the bolt (2) is inserted into the insertion hole (12) by the bolt chuck (3), and the screw portion (21) of the bolt (2) is inserted into the bolt chuck (3). A method for mounting a beam joining bolt in a rectangular steel pipe column, wherein the bolt (2) is directly mounted on the inner wall of the rectangular steel pipe column (1) by being pulled out from the mounting hole (11) and projected. 2. A removable temporary fixing device (4) is mounted on a base of the screw (21) of the bolt (2) drawn out from the mounting hole (11), and all the mounting holes (11) are removed. ), The screw portion (21) of the bolt (2) is projected and temporarily fixed with the temporary fixing tool (4). Then, the reinforcing steel plate (5) and the metal joint (6) are arranged and each screw is fixed. Washer for part (21)
(7) Attach the nut (8) and then the temporary fixing tool (4)
2. The method according to claim 1, wherein all of the bolts are removed, and the nut (8) is further tightened and temporarily tightened. 3. A torsion-type high-strength bolt is used as the bolt (2), and its tip is gripped and a screw portion (21) is pulled out from an insertion hole (12) into each mounting hole (11) and projected. Item 3. A method for mounting a beam-joining bolt in a square steel tubular column according to item 1 or 2. 4. The screw (21) of the bolt (2) is screwed and supported, and the screw (21) is pulled out from the insertion hole (12) into each of the mounting holes (11) and projected. Or a method for mounting a beam-joining bolt in a square steel tubular column according to item 2.